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  • 1 “Ovidius” University Ferdinand Blvd. Department of Botany, Faculty of Natural and Agricultural Sciences No. 61, Bl. A7, Sc. B, Ap. 43 RO-900721 Constanţa Romania
  • | 2 Botanical Institute of Bucharest Bucharest Romania
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This paper describes aspects of the leaf anatomy of two Salvia taxa, Salvia nemorosa L. subsp. tesquicola (Klokov et Pobed.) Soó and Salvia nutans L., as well as their hybrid, Salvia ×dobrogensis Negrean, aiming to highlight common anatomical characteristics and superiority of the hybrid, compared with its parental taxa, less subject to these plants raised in the literature. Differences were found both in the structure of petiole and blade. For the petiole, differences arise concerning the degree of development of the external (collenchyma and chlorenchyma) and inner cortex. The vascular system in all considered taxa, comprises a great number of vascular bundles, with different levels of development of the conductive tissues. The mesophyll is heterogeneous, bifacial in S. nemorosa subsp. tesquicola and the hybrid, and equifacial in S. nutans. The presence and anatomy of numerous glandular and non-glandular trichomes (hairs), different in structure, shape and size, were investigated and evaluated. Stomata are present on both upper and lower epidermis of the blade having diacytic type, impressing, as well, an amphistomatic character. The vascular system of the midrib of the studied Salvia taxa is well developed, in particular those of the hybrid species. The analysis of petiole and blade anatomy of two Salvia taxa and their hybrid reveals common and specific features from which we could conclude that although the hybrid leaf is more developed anatomically than its parental taxa, the petiole has many features similar to that of Salvia nutans and the blade is almost similar to that of Salvia nemorosa species.

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